10666657 has 8 divisors (see below), whose sum is σ = 11275200. Its totient is φ = 10062864.

The previous prime is 10666609. The next prime is 10666673. The reversal of 10666657 is 75666601.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10666657 - 2⁷ = 10666529 is a prime.

It is a super-2 number, since 2×10666657² = 227555143111298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10666057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4068 + ... + 6154.

It is an arithmetic number, because the mean of its divisors is an integer number (1409400).

Almost surely, 2^10666657 is an apocalyptic number.

It is an amenable number.

10666657 is a deficient number, since it is larger than the sum of its proper divisors (608543).

10666657 is a wasteful number, since it uses less digits than its factorization.

10666657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 10666657 is about 3265.9848438105. The cubic root of 10666657 is about 220.1284167625.

The spelling of 10666657 in words is "ten million, six hundred sixty-six thousand, six hundred fifty-seven".